From 0039834084f3936af7223d7d0e4cbbf6cc34ca63 Mon Sep 17 00:00:00 2001
From: Koichi ITO <koic.ito@gmail.com>
Date: Tue, 5 Oct 2021 07:07:11 +0900
Subject: [PATCH] Fix a false positive for `Style/StringLiterals`

Follow up to https://github.com/rubocop/rubocop/commit/a7ef72aa8c35336b169c5d78e2925fc27d739fcb#r57503462.

This PR fixes a false positive for `Style/StringLiterals` when using
some meta characters (e.g. `'\s'`, `'\z'`) with `EnforcedStyle: double_quotes`.
---
 changelog/fix_false_positive_for_style_string_literals.md | 1 +
 lib/rubocop/cop/mixin/string_literals_help.rb             | 2 +-
 spec/rubocop/cop/style/string_literals_spec.rb            | 2 ++
 3 files changed, 4 insertions(+), 1 deletion(-)
 create mode 100644 changelog/fix_false_positive_for_style_string_literals.md

diff --git a/changelog/fix_false_positive_for_style_string_literals.md b/changelog/fix_false_positive_for_style_string_literals.md
new file mode 100644
index 00000000000..b79452f1d61
--- /dev/null
+++ b/changelog/fix_false_positive_for_style_string_literals.md
@@ -0,0 +1 @@
+* [#10166](https://github.com/rubocop/rubocop/pull/10166): Fix a false positive for `Style/StringLiterals` when using some meta characters (e.g. `'\s'`, `'\z'`) with `EnforcedStyle: double_quotes`. ([@koic][])
diff --git a/lib/rubocop/cop/mixin/string_literals_help.rb b/lib/rubocop/cop/mixin/string_literals_help.rb
index b9d7677dec7..fba7dceaad0 100644
--- a/lib/rubocop/cop/mixin/string_literals_help.rb
+++ b/lib/rubocop/cop/mixin/string_literals_help.rb
@@ -17,7 +17,7 @@ def wrong_quotes?(src_or_node)
           # 1. It contains a double quote
           # 2. It contains text that would become an escape sequence with double quotes
           # 3. It contains text that would become an interpolation with double quotes
-          !/" | (?<!\\)\\[abcefMnrtuUx0-7] | \#[@{$]/x.match?(src)
+          !/" | (?<!\\)\\[aAbcdefkMnprsStuUxzZ0-7] | \#[@{$]/x.match?(src)
         end
       end
     end
diff --git a/spec/rubocop/cop/style/string_literals_spec.rb b/spec/rubocop/cop/style/string_literals_spec.rb
index d19de891840..ff1b88ee937 100644
--- a/spec/rubocop/cop/style/string_literals_spec.rb
+++ b/spec/rubocop/cop/style/string_literals_spec.rb
@@ -277,6 +277,8 @@
         c = '#{x}'
         d = '#@x'
         e = '#$x'
+        f = '\s'
+        g = '\z'
       RUBY
     end